Ok this is a very tongue-in-cheek question but;

Reading this stuff story about Happy Birthday plays on Mars I got wondering - did someone have to pay a royalty to the owner?

Options;
No - it was played on Mars and there is no trade agreement
No - we actually made our own version of a happy birthday song (like they do on TV)
No - but the lawyers will be in touch
No - and here is your first strike letter from the ISP/RIAM (Recording Industry Association of Mars) for illegally downloading

Yes - the spacecraft left from the USA - it's the right thing to do
Yes - the tune was actually broadcast from the USA and played on Mars
Yes - the tune was broadcast from Mars but played in the USA

Remember this is for fun